12506411231 has 4 divisors (see below), whose sum is σ = 12541840512. Its totient is φ = 12470981952.

The previous prime is 12506411209. The next prime is 12506411293. The reversal of 12506411231 is 13211460521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12506411231 - 2²⁶ = 12439302367 is a prime.

It is a super-2 number, since 2×12506411231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12506411231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506411831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17714111 + ... + 17714816.

It is an arithmetic number, because the mean of its divisors is an integer number (3135460128).

Almost surely, 2^12506411231 is an apocalyptic number.

12506411231 is a deficient number, since it is larger than the sum of its proper divisors (35429281).

12506411231 is an equidigital number, since it uses as much as digits as its factorization.

12506411231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35429280.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 12506411231 its reverse (13211460521), we get a palindrome (25717871752).

The spelling of 12506411231 in words is "twelve billion, five hundred six million, four hundred eleven thousand, two hundred thirty-one".